1. WITCH Control System Michaël Tandecki & The WITCH collaboration S. Van Gorp, E. Traykov, V. De Leebeeck, G. Soti, F. Wauters, N. Severijns (K.U.Leuven), M. Beck, P. Friedag, J. Mader, C. Weinheimer (Univ. Munster), F. Wenander, A. Herlert (ISOLDE-CERN), F. Glück, V. Kozlov (FZK Karlsrühe), D. Zakoucky (NPI-Rez, Prague)

2. Michaël Tandecki – CS workshop – 19/02/2009 Outline WITCH: overview & status Experimental requirements & hardware CS implementation To-do list Conclusion & Outlook

3. Michaël Tandecki – CS workshop – 19/02/2009 Outline WITCH: overview & status Experimental requirements & hardware CS implementation To-do list Conclusion & Outlook

4. Michaël Tandecki – CS workshop – 19/02/2009 Physics principle  - correlation ++ e Vector Scalar V S ++ e e.g. Fermi  + -decay H  = C V H V + C A H A + C S H S + C T H T + C P H P

5. Michaël Tandecki – CS workshop – 19/02/2009 Penning traps B: radial confinement E: axial confinement

6. Michaël Tandecki – CS workshop – 19/02/2009 Retardation spectrometer Energy conversion

7. Michaël Tandecki – CS workshop – 19/02/2009 Location & overview ~7m WITCH: Weak Interaction Trap for Charged particles

8. Status of the experiment First retardation spectrum (of 124 In) obtained in Nov. 2006 Run on 35Ar unveiled some new problems Work was done to investigate these issues and perform the necessary upgrades Nov 2009; second run on 35Ar which showed that all of the upgrades made were successful; low level ionization prevented us from measuring a clean retardation spectrum Michaël Tandecki – CS workshop – 19/02/2009 spectrometer potential (V)

9. Michaël Tandecki – CS workshop – 19/02/2009 Outline WITCH: overview & status Experimental requirements & hardware CS implementation To-do list Conclusion & Outlook

10. Michaël Tandecki – CS workshop – 19/02/2009 Experimental cycle 1.Ejection trigger from REXTRAP 2.Beamgate is triggered for a TOF separation 3.PDT is triggered to pulse down the ions 4.Cooling cycle in the cooler trap 5.Transfer to decay trap 6.Ions are kept in the decay trap for the measurement 7.The DAQ system is allowed to count; retardation power supply and DAQ are synchronized (to have a correspondence between time and retardation voltage) 8.Ions are ejected downwards 0s ~ 100  s ~ 1s~ 5s

11. Michaël Tandecki – CS workshop – 19/02/2009 WITCH hardware Vacuum –Pfeiffer TPG300 & TPG262 –ACT200 & ACT600 (for ATP400 & ATP900 Alcatel turbo pumps) Electrode voltages –IKS custom-made (10 channels from -500 to 500V) –ISEG NHQ 234M (2 channels with higher precision – 4kV) –ISEG EHQ F020n (16 channels from 0 to -2kV) –ISEG CPx (separate modules that go to -10kV)

12. WITCH hardware IKS vacuum interlock system Traps –IKS Gate & delay generator (2 devices with each 20 channels) –IKS trap supply (32 channels, 4 steps between -15 & 15V) –IKS endcap supply (4 channels, switching between -20 & 450V) Excitations (frequency generator) –Stanford Research Instruments DS345 –IKS RF switch Michaël Tandecki – CS workshop – 19/02/2009

13. WITCH hardware: Gate & Delay Unit Early replacement/back-up solution for the PPG100 card (and now permanent) Michaël Tandecki – CS workshop – 19/02/2009 Advantages flexible; experimental cycles (e.g. excitations) can be changed easily Disadvantages many cables needed overview of the cycle can be lost

14. WITCH hardware Spectrometer –IKS retardation voltage supply (in max. 40 steps from 0 to 500V) Data-acquisition –WIENER (to read a CAMAC crate; QDC, TDC, scalar) –Ortec MCS-pci (counter with variable time bins) –Tektronix oscilloscope(s) –Keithley electrometer Michaël Tandecki – CS workshop – 19/02/2009 Miscellaneous Thermocouple read-out (Pico technology TC-08) Cryostat resistors (for temperature indication) Liquid levels Magnets power supply IKS cross-beam ion source power supply Xantrax power supply (for 60kV ion source)

15. Michaël Tandecki – CS workshop – 19/02/2009 Outline WITCH: overview & status Experimental requirements & hardware CS implementation To-do list Conclusion & Outlook

16. Situation (of programs) 2 years ago Separate controls for different devices, on different computers HV control (with remote control via VI server) Timing Scan.GUI Oscilloscope (Easy) operation of the system was only possible thanks to remote desktopping Michaël Tandecki – CS workshop – 19/02/2009

17. Computer situation (physically) Michaël Tandecki – CS workshop – 19/02/2009 Power supplies for the HBL Pressure gauges Vacuum interlock power supplies VBL Trap electronics Data-acquisition ‘Trap computer’ Computers Remote control computer

18. Michaël Tandecki – CS workshop – 19/02/2009 Computer distribution/architecture WITCH CS server DNS, DMS server, SQL server, slow monitoring (pressures, temperatures), data server WITCH traps RS232 (USB): trap power supplies, timing unit GPIB: frequency generators, scope, electrometer WITCH slow controls RS232: pressure gauges, HV supplies CAN: HV supplies WITCH DAQ Ortec & WIENER cards + GUIs WITCH internet Internet gateway + GUIs CS device computers, slow controls CS data (object properties) DAQ data CS commands DEVICES

19. Michaël Tandecki – CS workshop – 19/02/2009 Interfaces: HV control

20. Michaël Tandecki – CS workshop – 19/02/2009 Interfaces: Trap Control (GADU)

21. Interfaces: Trap Control (electrodes) Michaël Tandecki – CS workshop – 19/02/2009 Under construction (but operational)

22. Interfaces: Scan.GUI Michaël Tandecki – CS workshop – 19/02/2009 Under construction (but operational)

23. Michaël Tandecki – CS workshop – 19/02/2009 Outline WITCH: overview & status Experimental requirements & hardware CS implementation To-do list Conclusion & Outlook

24. Michaël Tandecki – CS workshop – 19/02/2009 To-do list HV control –add the odd power supply (three electrodes remaining) –polish the instrument drivers TrapControl; –Work on the interface for the trap electrodes –Implement an FPGA card? Scan.GUI –Polish & finish it Use data from CS when taking data (for logging purposes) Start using the DSC engine Tune the basics: CAN communication when restarting the system..

25. Michaël Tandecki – CS workshop – 19/02/2009 Conclusion & Outlook The most important thing for us: it is working CS gives us more flexibility; every device can be easily accessed on every computer Outlook –Finalizing some of the GUIs –Tune some drivers a bit more –I can tidy up (and make available) some CS classes (and drivers) if people need it.